10030...55501 (49-digits)

This number is a prime.

                       100300110 0800110222 0110282011 0353011043 4011055501

Just showing those entries submitted by 'Bajpai': (Click here to show all)

The smallest prime that is the concatenation of seven 7-digit palindromic primes, i.e., (1003001, 1008001, 1022201, 1028201, 1035301, 1043401, 1055501). [Bajpai]